diff --git a/src/ui.js b/src/ui.js
index 9c23d64..610d691 100644
--- a/src/ui.js
+++ b/src/ui.js
@@ -148,6 +148,9 @@ export class Dialog {
     const self = this;
     this.root.addEventListener('mousedown', (e) => {
       if (self.mode !== 'free') return;
+      // Only initiate drag from the header bar. This prevents stealing focus
+      // from inputs, selects, and buttons inside the dialog body.
+      if (!e.target.closest('.tat-header')) return;
       if (e.target.classList.contains('tat-close')) return;
       const rect = self.root.getBoundingClientRect();
       self.dragState = { dx: e.clientX - rect.left, dy: e.clientY - rect.top };